英语分级听力第1级听力 English Level 1 是谁？-Who Is It?

Joseph never opens the front door. When someone knocks on the front door, Joseph says, "Who is it?" But he does not open the door. His parents told him to keep the doorclosed. His parents want him to be safe. He will be safe if he doesn't open the door. Yesterday someone knocked on the front door. "Who is it?" Joseph asked. "It's themailman," the person said. "I cannot open the door," Joseph said. "Okay, I will come back tomorrow," the mailman said. "Goodbye," Joseph said. Joseph is a good boy. He listens to his parents. He doesn't open the door for any person.